The Cluster along with the rest of Beta Galaxy was ordered to Foster in June 3073 along with the remnant of the Gamma Galaxy and the bulk of the Clan's fleet. In system were forces of Clan Steel Viper. A Trial of Possession was launched for two of the Viper holdings and the Scorpions were granted Safcon. The trials were fought honorably, but the killing of the Viper's commanding officer sparked all out fighting with no quarter given. The First Cateran Cluster were odeered to assault Firebase Nu, supported by the Third Scorpion Cuirassiers. The battle ended when the Scorpions called in orbital bombardment against the Viper positions.[5]

In June 3074 the Cluster was re-equipped with inferior 'Mechs and vehicles taken from an ancient weapons cache discovered on Waypoint 531. A Trinary was then sent on a reconnaissance mission to Cordoba. For three weeks it gathered intelligence from intercepted radio transmissions before landing on the planet. The Trinary split up and conducted a series of successful raids capturing Umayyad command personnel to interrogate. [6]

The Cluster was defending Hector when a force from Clan Cloud Cobra attacked in December 3078. In the defence of the Bright Ledge genetic research facility the Cluster fought off two assaults that saw brutal fighting. A wayward missile salvo destroyed the main bridge that the Cobras were crossing sending half of the Seventy-third Cobra Guard to their deaths in the ravine below. The Cobras proclaimed the Scorpions dezgra for this action and crushed the remaining Cateran warriors. The survivors were pulled back to Roche in 3079. [7]

In 3081 the First Cateran along with the rest of Beta Galaxy landed on Valencia, the planetary defenders surrendered as the first Scorpion Star landed. [7]

As a special forces unit, the First Cateran Cluster favored precision and surgical strikes instead of brute strength, although their warriors also had a reputation for reckless behavior.[2][8] Their unique Cateran Cluster formation gave the unit its special blend of firepower and quickness.[10]